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Evaluation of residual prestress force in a concrete girder bridge
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och brand.ORCID-id: 0000-0001-8889-4237
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och brand.ORCID-id: 0000-0002-1398-6118
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och brand.ORCID-id: 0000-0002-0560-9355
2016 (engelsk)Inngår i: IABSE CONGRESS, STOCKHOLM, 2016: Challenges in Design and Construction of an Innovativeand Sustainable Built Environment / [ed] Lennart Elfgren, Johan Jonsson, Mats Karlsson, Lahja Rydberg-Forssbeck and Britt Sigfrid, CH - 8093 Zürich, Switzerland, 2016, s. 222-229Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

When assessing the structural behaviour of prestressed concrete bridges, understanding the level of prestressing is crucial. However, for existing structures, this is usually an unknown parameter and the literature only describes a few methods of experimentally determining the residual prestress forces. For this paper, a non-destructive testing approach has been evaluated based on testing of a multi-span continuous girder bridge. The method, consisting of in-situ measurements in combination with finite element (FE) simulations, revealed prestress levels in the range 25 % to 82 % of the reinforcement steel yield strength, depending on the section tested. A comparison with theoretically calculated residual prestress forces, taking into account friction and timedependent losses, indicated values of the same order but with some inconsistencies.

sted, utgiver, år, opplag, sider
CH - 8093 Zürich, Switzerland, 2016. s. 222-229
Serie
IABSE Congress Reports
HSV kategori
Forskningsprogram
Konstruktionsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-63562Scopus ID: 2-s2.0-85018989242ISBN: 978-3-85748-144-4 (tryckt)OAI: oai:DiVA.org:ltu-63562DiVA, id: diva2:1098955
Konferanse
9th IABSE Congress, Stockholm 2016, September 21-23
Tilgjengelig fra: 2017-05-29 Laget: 2017-05-29 Sist oppdatert: 2018-03-26bibliografisk kontrollert

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Bagge, NiklasNilimaa, JonnyElfgren, Lennart

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Totalt: 76 treff
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